Quiz 6 Flashcards
Allantochorion
A placental membrane formed by fusion of the allantois and chorion. When the chorion becomes vascularized by the allantois then this compound layer is designated allantochorion or chorioallantoic membrane
Allantois
At extraembryonic membrane formed from the embryo; it fuses to the chorion and serves as a receptacle for fetal urine
Amnion
A thin membrane which forms a closed sac around the embryo. It contains the amniotic fluid in which the embryo is immersed
Caruncle
Maternal sites for attachment of the fetal cotyledons form half of a placentome
Colostrum
The fluid usually only secreted by the mammary gland shortly after parturition and is important for passive immunity of the neonate
Endometritis
Inflammation of the uterine mucous membrane
Eutherian mammal
Mammals that develop a placenta
Involution
The return of a tissue to its normal size
Lactational anestrus
Lack of estrous or menstral cycles due to suckling or the presence of young
Metritis
Inflammation of the uterus
Multiparous
A mammal which has had two or more pregnancies that resulted in viable offspring
Neonatal
Pertaining to the first few weeks after birth
Nulliparous
Having never given birth to viable young
Parity
The condition of a female mammal with regard to her having borne young
Parturition
The act or process of giving birth to young
Peristalisis
A wave of contraction passing a long certain tubular organs that possess longitudinal and circular muscle layer
Placentome
Made of a caruncle and cotyledon location of nutrient/gas/waste exchange between fetus and dam
Primiparous
Bearing or having borne only one young or set of young
Pueperium
The period from paturition to the resumption of normal estrous cycles
Seasonal anestrus
The period of anestrus that is induced by long (sheep) or short (horses) photoperiod
Pyometra
An accumulation of pus w/in the uterus
Vomeronasal organ
An olfactory organ that is believed to be associated w/ detection of pheromones
What develops after fertilization then fuse together
The male and female pronuclei
What part of the blastocyte forms the embryo
The inner cell mass
What part of the blastocyst forms the placenta
The trophoblast
When can you call an early embryo a zygote
After the male and female pronuclei fuse together
What is a luteotrophic signal
Something that supports the CL
What is an antiluteolytic signal
Something that prevents PGF2 alpha from affecting the CL
What are the three maternal recognition factors of mice and rats
Spines in the rat penis, placental lactogen 1, and placental lactogen 2
What is the luteotropic effect
The production of prolactin hormone that is stimulated by the spines in the penis of rat and mice
What is the recognition of pregnancy in humans
hCG production
How is PGF2 alpha transported to the ovary
It is transported by the uterine vein that spirals around the ovary artery absorbing the PGF2 alpha
What happens to PGF2alpha when a sow is pregnant
It gets redirected to the lumen keeping it from moving to the ovary
How long is the CL required to be present on the ovary during pregnancy
The first 60 days then the placental supplies the progesterone
How many phases of estrogen release occur in pigs
Two
What species requires the CL to be presence on the ovary throughout the pregnancy
Pigs
What prevents PGF2alpha production in the sheep
Having an embryo in the uterus
What is the role of interferon tau
Blocks up regulation of estrogen receptor in uterine epithelium leading to no oxytocin receptor increase
What secretes interferone tau
The fetus
